Gas-btjkner



G. 'L. BLANCHARD.

GAS BURNER.-

APPLICATION FILED JULY I. 1918.

7 1,305,436. Patented June 3, 1919.

llv VEN TOP A TT'VS.

GEORGE L.BLANCHAl-?D GEORGE L. BLANCHARD, 0F POMON A, CALIFORNIA.

GAS-BURNER.

Specification of Letters Patent. Patented June 3, 1919.

Application filed July 1, 1918. Serial No. 242,817.

'To all whom it may concern:

Be it known that I, GEORGE L. BLAN- orrann, a citizen of the United States, residing at Pomona, in the county of Los Angeles and State of California, have invented new and useful Improvements in Gas- Burners, of which the following is a specification.

My invention relates to gas burners and consists in the novel features herein shown, described and claimed.

Figure 1 is a fragmentary vertical sectional elevation showing a gas burner embodying the principles of my invention in use in a furnace.

2 is a vertical cross-section on the line 2-2 of Fig. 1.

Fig. 3 is a rear end elevation, as indicated by the arrow 3 in Fig. 1.

The furnace wall 1 has a door opening 2 and a door 3 for closing the opening. The burner 4 is mounted through the door 3.

The gas burner 4c is made from a section of iron pipe or casing from two and onehalf to five inches in diameter and twelve to thirty inches long. The pipe is straight inside and out. Slots 5, 6, 7 and 8 are formed from the inner end of the pipe and radial to the axis and the lengths of the slots are substantially equal to the diameter of the pipe. The slots are from a quarter to a half inch wide.

A section of half inch rod 9 is fixed diametrically acrossthe opening in the pipe at the extreme inner end, said rod being preferably located half-way between adjacent slots.

The burner 4c is mounted by driving it tightly into an opening through the door 3 with one-quarter of the burner outside of the door.

Three series of air intake openings 10, 11 and 12 are formed radially in the outer end of the burner.

A battle wall 13 is built up from the floor 14 of the furnace, the wall being located a distance from the inner end of the burner 4 substantially equal to the length of the burner. The wall 13 is built ofbrick, the brick being laid tier upon tier and staggered and spaced apart to form a plurality of openings 15.

The gas supply pipe 16 is attached to a regulating valve 17, a nipple 18 leads downwardly from the valve 17 an elbow 19 leads downwardly and backwardly from the nipple 18, and a nozzle 20 leads backwardly from the lower end of theelbow 19. The nozzle 20 has a long tapered discharge end 21 located a distance from the outer end of the burner 4 substantially equal to the diameter of the burner, and said nozzle is set straight in line with the axis of: the burner and at the center, so that the gas discharged from the nozzle will shoot straight through the burner a toward the baflie wall 13.

The gas leaving the tapered nozzle 21 vaties in vacuum effect in proportion to the pressure of the gas and this pressure varies from four ounces to ten pounds.

The gas has a tendency to take the same cone shape upon leaving the nozzle which it had before it was released by the nozzle. The funnel or cone shape which the gas takes upon leaving the nozzle produces a partial vacuum in the center and this vacuum is from four to eight times as great as the vacuum effect produced by the draft of the fire box. The cone shaped gas column, hollow inside, extends to and enters the perforated end of the burner where the thin envelop of gas is broken u and the outside air enters through the per orations at right angles to the flow of gas, thus insuring a good mixture of the gas and air.

The vacuum effect throughout the length of the burner is about twice that of the ordinary draft of the fire box. This vacuum effect is finally equalized at the discharge end of the burner by the air pre-heated in the fire box entering through the slots 5, 6, 7 and 8. This final addition of pre-heated air to the already mixed air and gas completes the mixture for combustion and when this mixture is ignited the flame strikes against the baffle wall 13. r

The half inch rod 9 in the discharge end of the burner divides the discharge of fuel mixture and produces a screen effect which makes it possible to reduce the flow of gas, as when it is desired to reduce the fire, without danger of burning back in the burner.

The gas may be supplied the nozzle by vaporizing oil in a retort or from a gas plant or natural gas well.

Various changes may be madein the details of construction without departing from the spirit of my invention as claimed.

I claim:

l. -A gas burning plant comprising a furnace having a front Wall With a door opening, a door covering the opening, a burner mounted through the door and comprising a straight pipe having radial longitudinal slots extending from its rear end and a series of perforations around its front end and a rod mounted diametrically at its rear end, a. foraminous baflie Wall behind the burner, and a cone-shaped nozzle in front of the burner and discharging through the burner toward the Wall.

2. A. gas burner comprising a long straight pipe having radial longitudinal slots at its rear end and a rod diametrically across its rear end and a series of perforations around its front end,'a long tapered nozzle mounted in front of its front end and discharging through the burner, and a foraminous brick baflie Wall behind the burner.

3. A gas burner comprising a long straight pipe having radial longitudinal slots at its rear end and a rod diametrically across its rear end, a tapered gas sup ply nozzle mounted in front of its front end and spaced therefrom, and a bafiie Wall be-. hind the burner.

In testimony whereof I have signed my name to this specification. 1

GEORGE L. BLANCHARD.

Copies of this patent may be obtained for five cents each, by'addressing the Commissioner of Patents, Washington, D. G. 

